GBFS is an alternative to the hassle of the various "incbin" hacks
(such as bin2h, b2x, objcopyroda/interflip, etc.) used to put binary
data (such as graphics, text, maps, and sounds) into a Game Boy
Advance program. It also has the advantage that artists and music
people will be able to try their media immediately on the emulator
without having to recompile the program. It's analogous to the
"appended datafile" method used in some PC games, especially those
that use the Allegro library (http://alleg.sourceforge.net).

Use the included tools to put all your media into a GBFS file (an
archive similar to a zip file but not compressed) and then simply
concatenate the program binary to the GBFS file containing the
data. Then use the library to find binary objects by name.

A demonstration program is included that rolls credits
based on a font and text file both stored in a GBFS file.
Feel free to borrow this code for your game's end credits.

Find it at http://pineight.com/gba/

--
Damian Yerrick